Brittle Bladderfern vs Caucasian Alder

Cystopteris tenuis compared with Alnus subcordata

Key Differences

• Brittle Bladderfern is Not Evaluated while Caucasian Alder is Least Concern.

Taxonomic Classification

Rank	Brittle Bladderfern	Caucasian Alder
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Tracheophyta	Magnoliophyta (Flowering Plants)
Class	Polypodiopsida (Polypodiopsida)	Magnoliopsida (Dicots)
Order	Polypodiales (Polypodiales)	Fagales (Beeches & Oaks)
Family	Cystopteridaceae	Betulaceae
Genus	Cystopteris	Alnus
Species	Cystopteris tenuis	Alnus subcordata

Evolutionary Relationship

Brittle Bladderfern and Caucasian Alder share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

Caucasian Alder

LC — Least Concern

Physical Characteristics

Attribute	Brittle Bladderfern	Caucasian Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brittle Bladderfern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Canada and United States.

Caucasian Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Brittle Bladderfern

The Brittle Bladderfern (Cystopteris tenuis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Caucasian Alder

The Caucasian Alder (Alnus subcordata) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.